... Turned Parts 1. Tight tolerance 2.Real factory, reasonable price 3.Material :8620,314,314L,316 Precision Metal Turned Parts Details ... :1). Precision machining part,making any products according to your samples or drawings.2). widely ... and toughnessprovides good corrosion resistanceused for cutlery, valve parts, and surgical instrumentsStainless steel 440Chard after heat treatedgood ...